How turn on alarm *ringtone pressed o.k. but no sound from any alarm ringtone!?
Experienced this before, my phone (I'm using a different phone) wasn't alarming so I got late to meetings or something. What I do now is while I'm in alarms page/app, I press volume up. You will see a volume bar popping out, make sure the icon in it is an alarm icon, now just make sure it is maxed so it can wake you up. :)
Hope that helps!